Reaction - a boat which is going against the current but which does not prevent the river from flowing on.

Reaction - a boat which is going against the current but which does not prevent the river from flowing on.

逆水行舟逆水行舟逆水行舟逆水行舟逆水行舟逆水行舟逆水行舟逆水行舟逆水行舟逆水行舟

-- Victor Hugo 维克多雨果